Title:
CRYOGENIC REFRIGERATOR
Document Type and Number:
WIPO Patent Application WO/2011/129317
Kind Code:
A1
Abstract:
Disclosed is a cryogenic refrigerator having a cylinder to which refrigerant gas is supplied, a displacer which reciprocates within the cylinder, a drive device which reciprocates the displacer within the cylinder, and a coupling mechanism for coupling the drive device to the displacer. The coupling mechanism has an output shaft extending from the drive device toward the displacer, an engagement pin which penetrates the output shaft so as to extend in a direction intersecting with the reciprocating direction of the displacer, a rotation prevention mechanism which engages with the engagement pin when the displacer rotates, to prevent the displacer from rotating, and a closure which is secured to one end of the displacer and engaged with the output shaft.
Inventors:
MATSUBARA, Takahiro (1-1, Yato-cho 2-chome, Nishitokyo-sh, Tokyo 85, 〒1888585, JP)
Application Number:
JP2011/059052
Publication Date:
October 20, 2011
Filing Date:
April 12, 2011
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES, LTD. (1-1 Osaki 2-chome, Shinagawa-ku Tokyo, 25, 〒1416025, JP)
住友重機械工業株式会社 (〒25 東京都品川区大崎二丁目１番１号 Tokyo, 〒1416025, JP)
住友重機械工業株式会社 (〒25 東京都品川区大崎二丁目１番１号 Tokyo, 〒1416025, JP)
International Classes:
F25B9/14
Attorney, Agent or Firm:
ITOH, Tadahiko (32nd Floor, Yebisu Garden Place Tower 20-3, Ebisu 4-Chome, Shibuya-K, Tokyo 32, 〒1506032, JP)
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Claims: